
handle: 10481/82632
Se estudia el movimiento de bicarbonato y cloruro en un asa "in situ" de ileón terminal de conejo. Las concentraciones de Cl-, C03H-, Na+ y K+ se analizan tras media hora de permanencia de las soluciones en el asa. Existe un movimiento de cloruro mucosa-serosa desde concentraciones iniciales de este anión de 58 mEq/l. En el caso del bicarbonato tiene lugar un movimiento serosa-mucosa, incluso cuando la solución contiene 67 mEq/l de C03H-, niveles muy superiores a los plasmáticos, indicando que en el ileón terminal de conejo existe un proceso activo de secreción de bicarbonato. Hecho que se confirma al someter los animales en situación de hipotermia, en que la secreción de bicarbonato se hace casi nula para una solución que contiene una concentración de bicarbonato similar a la plasmática.
We have studied the changes of bicarbonate and chloride in a loop «in Sittu> of terminal ileum of rabbit. We analysed the concentration of N a+, K+, 01- and COaH- after half and hour that solutions have been remaining in the loop. There is a movement mucosa-serosa of chloride from a concentration initial of 58 mEq/l. In the case of bicarbonate takes place a movement serosa-mucosa, even when the solution contains 67 mEq/l, higher level than In the plasma, this indicates in terminal ileum of rabbits that exist an active process of secretion of bicarbonate. We can confirm the existence of this mechanism in hypothermia. In these conditions the secretion of bicarbonate in almost nule for a solution containing a concentration of bicarbonate similar to the plasma.
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